Variable capacity type gear pump

Details Variable capacity type gear pump Variable capacity type gear pump

1975-11-06

1977-05-10

Vrablik, John J.

Pumps

Expansible chamber type

Having separate noncyclic valve

418206, 137569, 13762548, F04B 4900, F04C 108

Patent

active

040225518

ABSTRACT:
This invention relates to a variable capacity type gear pump which is capable of operating efficiently by flowing out by-passed liquid under extremely low pressure to adjust or control the amount of feed-out liquid. This is accomplished by providing the walls of the casing (housing) of the gear pump with ports or slits, which ports or slits are connected to a controlling valve in order to remove the desired amount of by-passed liquid.

REFERENCES:
patent: 1481358 (1924-01-01), Dwyer
patent: 2424750 (1947-07-01), Heckert
patent: 2630759 (1953-03-01), Mahlon
patent: 2676462 (1954-04-01), Berry
patent: 2820416 (1958-01-01), Compton
patent: 3824041 (1974-07-01), Rystrom

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